WO2001094793A9 - Joint axial - Google Patents

Joint axial

Info

Publication number
WO2001094793A9
WO2001094793A9 PCT/EP2001/006512 EP0106512W WO0194793A9 WO 2001094793 A9 WO2001094793 A9 WO 2001094793A9 EP 0106512 W EP0106512 W EP 0106512W WO 0194793 A9 WO0194793 A9 WO 0194793A9
Authority
WO
WIPO (PCT)
Prior art keywords
clearing
outer part
inner part
pump
pump according
Prior art date
Application number
PCT/EP2001/006512
Other languages
German (de)
English (en)
Other versions
WO2001094793A1 (fr
Inventor
Hugo Vogelsang
Original Assignee
Hugo Vogelsang Maschb Gmbh
Hugo Vogelsang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hugo Vogelsang Maschb Gmbh, Hugo Vogelsang filed Critical Hugo Vogelsang Maschb Gmbh
Publication of WO2001094793A1 publication Critical patent/WO2001094793A1/fr
Publication of WO2001094793A9 publication Critical patent/WO2001094793A9/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps

Definitions

  • the invention relates to a pump according to the preamble of claim 1 and a device according to the preamble of claim 13.
  • the invention is based on the problem of reducing the load on seals of the type mentioned, in particular in pumps with a conveyance of fiber-loaded components.
  • the invention solves this problem by means of a pump with the features of claim 1 and a device with the features of claim 13.
  • the invention enables cleaning of the axial seal during operation, that is to say during the rotation of the shaft.
  • the clearing member (s) prevents fiber material from becoming lodged between the rotating inner part and the fixed outer part in that the clearing member crushes any fibers that have penetrated and thus prevents them from forming a coherent fiber mat. At least turbulence is caused by the clearing member (s), which also counteracts the formation of coherent fiber mats.
  • Broaching elements are particularly advantageously provided both on the rotating inner part and on the fixed outer part, as a result of which a cutting and counter-cutting effect is achieved. This effect is further improved if several clearing elements are arranged in alignment one behind the other and clearing elements of the inner part and the outer part mesh through one another. This prevents fibers from being arranged in the area of the broaching element upstream in the direction of rotation and being rotated with it. Rather, such fibers stick to the shearbars and are thus broken up.
  • Such a principle can be implemented both with radial and with axially extending clearing members. These can act in combination with one another on the inner part and outer part, in order to secure different areas of an annular gap between the two parts against the formation of fiber mats.
  • Fig. 1 is a schematic sectional drawing of an inventive
  • FIG. 2 shows an end view of a sealing device according to the invention with radial clearing members, approximately corresponding to a section along the line II-II in FIG. 1,
  • FIG. 4 is a view similar to FIG. 3 when installing the sealing device in a pump, broken off at the axial line of symmetry,
  • FIG. 5 is a view similar to FIG. 2 of a sealing device with axially extending clearing members
  • Fig. 7 is a view similar to Fig. 4 with an alternative pump
  • the sealing device 1 of a first embodiment shown in FIGS. 2 and 3 is for sealing axial sections of a rotating part, here one Wave 2, provided.
  • an adjusting ring 3 rotating with the shaft 2 is provided on the device 1, which can be axially clamped onto the shaft 2 and comprises a circumferential recess 5 for receiving an O-ring 6.
  • the adjusting ring 3 is pressed axially onto the shaft 2 up to the stop against a sleeve 7.
  • a separate sleeve 7 there can also be a projection in the shaft 2 or other securing of the adjusting ring 3 on the latter.
  • a stationary part for example a housing part
  • an outer part 4 which overlaps the adjusting ring 3 forming an inner part with an annular projection 8 in an axially lateral region.
  • an annular gap 9 is formed between the outer part 4 and the inner part 3, which in the exemplary embodiment comprises a portion 9a pointing radially inward and a region 9b lying parallel to the circumference of the shaft 2.
  • This gap 9 is necessary on the one hand to ensure the free rotatability of the inner part 3 relative to the outer part 4.
  • this gap can often not be made particularly large, for example in pumps which comprise several shafts 2 lying in parallel, since otherwise the bearings and seals of the different shafts 2 would collide with one another.
  • a gap 9 therefore usually has a width of only a few millimeters. Sealing devices 1 of this type can be used in particular in pumps, but also in rollers of agricultural equipment or in wheel bearings of special vehicles which are exposed to particular contamination, or in other areas.
  • a mechanical seal 10 is provided for sealing the rotating part 3 against the standing part 4, which comprises a sliding ring 12 pressed against the inner part 3 by means of an O-ring 11 and one by means of an O-ring 13 the standing part 4 held opposite sliding ring 14.
  • the O-rings 11, 13 are each clamped behind undercuts (not shown) and secure the sliding rings 12, 14 in their respective position by their radial and axial pressure.
  • the open side of the gap 9 is located, for example, behind a cover plate 26 (FIG. 1) of a pump chamber 31, with the possibility of immigration for dirt, such as fiber materials, between the inner part 3 and the cover plate 26.
  • the inner part 3 according to FIGS. 2 and 3 is assigned clearing members 17, 18 pointing radially outwards.
  • the clearing members 17 and 18 are located one behind the other in the axial direction, several such arrangements of clearing members 17, 18 being distributed over the circumference.
  • Fig. 2 it is indicated on the basis of the dotted line 19 that a plurality of packs of clearing members 17, 18 are arranged offset from one another by 180 °.
  • An arrangement with three or four such packages, then offset from one another by 120 ° or 90 °, is also possible, as is the arrangement of only one clearing element 17 or 18 or a stack of clearing elements 17, 18 lying one behind the other.
  • the outer part 4, which is arranged in a stationary manner, is assigned complementary clearing members 20, 21.
  • the arrangement of such clearing members is not mandatory, but considerably improves the clearance of the annular gap 9 from penetrated fibrous materials.
  • the clearing members 20, 21 of the outer ring act as counter cutting edges. It is also possible here to arrange only one clearing member 21 or more than two clearing members, for example three clearing members, staggered one behind the other in the axial direction.
  • Several clearing members 20, 21 are also arranged distributed over the circumference. However, the arrangement of the circumferential distribution of the broaching members 20, 21 of the outer part is offset from that of the inner part (see dashed line in FIG. 2).
  • the clearing members 17, 18 of the inner part lie opposite one another, it is provided here, for example, that the clearing members 20, 21 of the outer part 4 are distributed around the circumference by 160 °.
  • the clearing members 17 and 18 of the inner part or 20 and 21 of the outer part each have a rectangular cross section and pass through one another in a meshing manner.
  • the clearing members 17, 18, 19, 20 are formed in one piece with the respective carrier, which is formed by the inner part 3 or the outer part 4.
  • the carriers 3, 4 are made of stainless steel, a space being milled out between the clearing members 17, 18, 19, 20 and only the clearing members remaining as projecting parts.
  • broaching members interchangeably as separate components, which would have the advantage that, for example, wear-induced abrasion of broaching members could be taken into account by their individual replacement.
  • the resilient mounting of the sliding rings 12, 14 by means of the O-rings 11, 13 and the intermeshing interlocking clearing members 17, 18, 20, 21 enables the parts 3 and 4 to be braced against one another in such a way that they initially axially are pressed together and then at least one arrangement of clearing members 17, 18 of the inner part 3 with clearing members 20, 21 of the outer part 4 is clamped by turning.
  • clearance of the annular gap 9 is provided in the region of the region 9a pointing radially inwards.
  • an axially outward-pointing clearing member 117 is provided on the inner part 3 which is also moved and which interacts with at least one axial outer clearing member 120 of the standing part 4.
  • a plurality of clearing members 117 are arranged on the inner part 3, distributed over the circumference, as are a plurality of clearing members 120 on the outer part 4.
  • the number of axial clearing members 117, 120 is again variable.
  • several clearing members can be provided lying radially one above the other.
  • 1 and 4 show the sealing device 1 of the first exemplary embodiment when used in a pump 30.
  • This comprises a pump chamber 31, in which at least one piston 32, which is held via the shaft 2, rotates.
  • a plurality of rotating pistons 32 sliding on one another are often provided, which limits the spatial conditions.
  • the pump chamber 31 is separated from the pump housing 33 by the plate 26 forming a wall, the bushing for the shaft 2 being located in the central region of the wall 26. Accordingly, the inner part 3 is rotatable relative to the wall 26.
  • the inner part 3, which can be made of stainless steel, for example, has a tolerance compensation 34 (FIG. 3) on its radially outer region, for example a series of circumferential rings which, on the one hand, roughly seal the annular gap 9 in cooperation with the end face of the plate 26 and on the other hand, by removing the outer ring areas, they are also suitable for compensating for tolerances.
  • the annular gap 9 can be provided with a suction and flushing device 35, through which, for example, coolant can be introduced into the annular gap 9. As a result, comminuted fibers can also be removed from the annular gap 9.
  • a blocking chamber 25 adjoins the mechanical seal shown, which can be filled with grease, for example.
  • a radial shaft seal 24 which seals the area of the bearing 36 of the pump shaft in the housing 33 with respect to the blocking chamber 25.
  • FIG. 4 is broken off at the central axial axis of symmetry 37.
  • FIG. 7 shows a view similar to FIG. 4 of an alternative embodiment of a pump 130.
  • the mechanical seal with the mechanical rings 12, 14 is against a white tere radial shaft seal 112 exchanged so that the radial shaft seals 112 and 24 lie next to each other and limit the barrier chamber 25 between them.
  • sealing device 1 can implement the invention in various configurations and is not restricted to one type of seal. In any case, there is a rotating and a standing part which delimit a gap between them, this gap being able to be secured against fiber accumulation by means of clearing members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe (30, 130) comportant au moins un piston (32) pouvant être entraîné par un arbre rotatif (2) et se déplaçant dans une chambre de pompe (31). L'arbre (2) est logé de manière rotative au moyen d'un ou plusieurs points paliers (36) dans une zone du carter de pompe (33) adjacente à la chambre de pompe (31). Au moins un joint axial est logé entre un point palier (36) et la chambre de pompe (31). Ledit joint axial présente une partie intérieure (3) se déplaçant par l'intermédiaire de l'arbre (2), et une partie extérieure (4) entourant au moins partiellement la partie intérieure, disposée de manière fixe par rapport au carter de pompe (33). La pompe selon l'invention est conçue de manière que la partie intérieure (3) est pourvue d'au moins un élément d'évacuation (17, 18, 117) orienté vers la partie extérieure (4).
PCT/EP2001/006512 2000-06-09 2001-06-08 Joint axial WO2001094793A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20010216.8 2000-06-09
DE20010216U DE20010216U1 (de) 2000-06-09 2000-06-09 Axiale Dichtung

Publications (2)

Publication Number Publication Date
WO2001094793A1 WO2001094793A1 (fr) 2001-12-13
WO2001094793A9 true WO2001094793A9 (fr) 2002-09-19

Family

ID=7942591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006512 WO2001094793A1 (fr) 2000-06-09 2001-06-08 Joint axial

Country Status (2)

Country Link
DE (1) DE20010216U1 (fr)
WO (1) WO2001094793A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20300127U1 (de) 2003-01-08 2004-05-13 Hugo Vogelsang Maschinenbau Gmbh Mehrteiliger Blockring für Drehkolbenpumpe
DE102007036714B4 (de) * 2006-08-22 2011-12-15 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe mit Cartridge-Dichtung
DE102014000392A1 (de) * 2014-01-13 2015-07-16 Schöning Gmbh Gleitringdichtungssystem, Dosiervorrichtung mit Gleitringdichtungssystem sowie dazugehöriges Montageverfahren einer Dosiervorrichtung
DE202014010816U1 (de) * 2014-08-11 2016-09-21 Jung & Co. Gerätebau GmbH Schraubenspindelpumpe mit Dampfsperre
DE102018122932A1 (de) * 2018-09-19 2020-03-19 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche Maschine
DE202018004819U1 (de) 2018-10-18 2018-11-21 Doris Korthaus Rotierende Verdrängerpumpe mit Gleitringdichtung
DE102018008263A1 (de) 2018-10-18 2020-04-23 Doris Korthaus Rotierende Verdrängerpumpe mit Gleitringdichtung
DE102019107671B3 (de) 2019-03-26 2020-07-30 Netzsch Pumpen & Systeme Gmbh Gleitringdichtung und Verfahren zur Montage einer solchen Gleitringdichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE426473C (de) * 1922-06-27 1926-10-08 Wilhelm Kuehn Dr Ing Seitenabdichtung der Kolbentrommel von Drehkolbenmaschinen
US3112867A (en) * 1961-03-29 1963-12-03 Wade Engineering Ltd Blowers and motors with cooperating rotors
US3292847A (en) * 1964-11-03 1966-12-20 Dresser Ind Lubricant sealing means for rotary positive displacement pump
DE1600523C3 (de) * 1967-06-03 1974-08-01 Sealol Inc., Warwick, R.I. (V.St.A.) Gleitringdichtung mit einer dem Radial sich erstreckenden Dichtungsspalt zugeführten Sperrflüssigkeit
DE2725299A1 (de) * 1977-06-04 1978-12-14 Leybold Heraeus Gmbh & Co Kg Waelzkolbenpumpe oder -verdichter
FR2638788B1 (fr) * 1988-11-07 1994-01-28 Alcatel Cit Pompe a vide du type roots multietage

Also Published As

Publication number Publication date
WO2001094793A1 (fr) 2001-12-13
DE20010216U1 (de) 2001-10-18

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